A simple World of Warcraft: Vanilla and The Burning Crusade addon, that skins the regular game tooltips. It changes the appearance and content of your tooltips to a more TukUI alike experience. It shows an healthbar above player tooltips including the HP values, the guild tag and the currently focused unit.
Notice: This Addon or a superior and maintained version of it, is already included in pfUI. If using this in combination with pfUI you might get bad results or up to performance regressions.